G2 (Moderate) Storm Watch Issued
A G2 (Moderate) geomagnetic storm watch has been issued for 16 May 2019 (UTC day) due to anticipated CME arrival. A G1 (Minor) storm watch is in effect for 17 May due to possible residual CME impacts.
NOAA Scales mini
R1 (Minor) Radio Blackout Impacts
HF Radio: Weak or minor degradation of HF radio communication on sunlit side, occasional loss of radio contact.
Navigation: Low-frequency navigation signals degraded for brief intervals.
More about the NOAA Space Weather Scales
Navigation: Low-frequency navigation signals degraded for brief intervals.
G2 (Moderate) Storm Watch Issued